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ORCIDSivaram Ambikasaran
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2020 – today
- 2024
[j11]Vaishnavi Gujjula
, Sivaram Ambikasaran:
Algebraic Inverse Fast Multipole Method: A fast direct solver that is better than HODLR based fast direct solver. J. Comput. Phys. 497: 112627 (2024)- [j10]Ritesh Khan, V. A. Kandappan, Sivaram Ambikasaran:
HODLRdD: A new black-box fast algorithm for N-body problems in d-dimensions with guaranteed error bounds: Applications to integral equations and support vector machines. J. Comput. Phys. 501: 112786 (2024) - [j9]V. A. Kandappan, Vaishnavi Gujjula, Sivaram Ambikasaran:
HODLR3D: hierarchical matrices for N-body problems in three dimensions. Numer. Algorithms 97(4): 1635-1672 (2024) - [i14]Sivaram Ambikasaran, Ritesh Khan, Johannes Tausch, Sihao Wang:
A hybrid interpolation ACA accelerated method for parabolic boundary integral operators. CoRR abs/2408.04080 (2024) - 2023
- [j8]V. A. Kandappan, Vaishnavi Gujjula, Sivaram Ambikasaran:
HODLR2D: A New Class of Hierarchical Matrices. SIAM J. Sci. Comput. 45(5): 2382- (2023) - [i13]Vaishnavi Gujjula, Sivaram Ambikasaran:
Algebraic Inverse Fast Multipole Method: A fast direct solver that is better than HODLR based fast direct solver. CoRR abs/2301.12704 (2023) - [i12]V. A. Kandappan, Vaishnavi Gujjula, Sivaram Ambikasaran:
HODLR3D: Hierarchical matrices for N-body problems in three dimensions. CoRR abs/2307.16303 (2023) - [i11]Ritesh Khan, Sivaram Ambikasaran:
New algebraic fast algorithms for N-body problems in two and three dimensions. CoRR abs/2309.14085 (2023) - 2022
- [i10]Vaishnavi Gujjula, Sivaram Ambikasaran:
A new Nested Cross Approximation. CoRR abs/2203.14832 (2022) - [i9]Vaishnavi Gujjula, Sivaram Ambikasaran:
A new Directional Algebraic Fast Multipole Method based iterative solver for the Lippmann-Schwinger equation accelerated with HODLR preconditioner. CoRR abs/2204.00326 (2022) - [i8]V. A. Kandappan, Vaishnavi Gujjula, Sivaram Ambikasaran:
HODLR2D: A new class of Hierarchical matrices. CoRR abs/2204.05536 (2022) - [i7]Ritesh Khan, V. A. Kandappan, Sivaram Ambikasaran:
Numerical rank of singular kernel functions. CoRR abs/2209.05819 (2022)
2010 – 2019
- 2019
- [j7]Sivaram Ambikasaran, Karan Singh, Shyam Sankaran:
HODLRlib: A Library for Hierarchical Matrices. J. Open Source Softw. 4(34): 1167 (2019) - 2016
- [j6]Amirhossein Aminfar, Sivaram Ambikasaran, Eric Darve:
A fast block low-rank dense solver with applications to finite-element matrices. J. Comput. Phys. 304: 170-188 (2016) - [j5]Sivaram Ambikasaran, Daniel Foreman-Mackey, Leslie Greengard, David W. Hogg, Michael O'Neil:
Fast Direct Methods for Gaussian Processes. IEEE Trans. Pattern Anal. Mach. Intell. 38(2): 252-265 (2016) - [j4]Sivaram Ambikasaran, Carlos Borges, Lise-Marie Imbert-Gérard, Leslie Greengard:
Fast, Adaptive, High-Order Accurate Discretization of the Lippmann-Schwinger Equation in Two Dimensions. SIAM J. Sci. Comput. 38(3) (2016) - 2015
- [j3]Sivaram Ambikasaran:
Generalized Rybicki Press algorithm. Numer. Linear Algebra Appl. 22(6): 1102-1114 (2015) - 2014
- [j2]Jun Lai, Sivaram Ambikasaran, Leslie Greengard:
A Fast Direct Solver for High Frequency Scattering from a Large Cavity in Two Dimensions. SIAM J. Sci. Comput. 36(6) (2014) - [i6]Amirhossein Aminfar, Sivaram Ambikasaran, Eric Darve:
A Fast Block Low-Rank Dense Solver with Applications to Finite-Element Matrices. CoRR abs/1403.5337 (2014) - [i5]Jun Lai, Sivaram Ambikasaran, Leslie Greengard:
A fast direct solver for high frequency scattering from a large cavity in two dimensions. CoRR abs/1404.3451 (2014) - [i4]Judith Y. Li, Sivaram Ambikasaran, Eric Darve, Peter K. Kitanidis:
A Kalman filter powered by H2-matrices for quasi-continuous data assimilation problems. CoRR abs/1404.3816 (2014) - [i3]Sivaram Ambikasaran, Michael O'Neil:
Fast symmetric factorization of hierarchical matrices with applications. CoRR abs/1405.0223 (2014) - [i2]Sivaram Ambikasaran, Eric Darve:
The Inverse Fast Multipole Method. CoRR abs/1407.1572 (2014) - [i1]Sivaram Ambikasaran:
Generalized Rybicki Press algorithm. CoRR abs/1409.7852 (2014) - 2013
- [j1]Sivaram Ambikasaran, Eric Darve:
An O (N log N) Fast Direct Solver for Partial Hierarchically Semi-Separable Matrices - With Application to Radial Basis Function Interpolation. J. Sci. Comput. 57(3): 477-501 (2013)
Coauthor Index
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